I need box plans for a 12w7 jl

Can you guys please give me box plans for a 12w7 jl. Should I go ported or sealed is the question? I also need something the smallest I can go because the ported box I currently have is way to big.
I am thinking about this box if anyone has plans for it and would 1.75 cu and 30hz be fine?http://www.caraudio.com/forum/showth...highlight=12w7